Bionomics of Chilo suppressalis larvae overwintering in paddy-rice and water-oat fields were investigated in Beijing in early-winter (middle November) and after-winter (early March).

• 摘要在冬初（11月中旬）和冬后（3月上旬）调查了北方稻田和茭白田二化螟越冬幼虫的生物学特性。